Joule – second
Watt
Newton-meter per second
Horsepower
Half that of car B
Equal that of car B
Twice that of car B
Four times that of car B
Speed
Impulse
Acceleration
Force
Momenta
Kinetic energies
Potential energy
None of the above
Force on the bullet acts for a longer distance
Bullet's momentum is greater than that of the rifle
Force on the bullet acts for a longer time
The impulse of the bullet is more
Moving.
Falling.
At an elevated position.
At rest.
Speed.
Acceleration.
Momentum.
Location.
Four times as much potential energy.
Twice as much potential energy.
Half as much potential energy
Neither of these.
Less.
The same
Twice as much.
Four times as much
The same distance as the slower arrow.
Twice as far as the slower arrow.
Four times as far as the slower arrow.
More than four times as far as the slower arrow.
Less than 100 J.
More than 100 J.
100 J.
Not enough information given.
Totally false.
True only if the car's engine is running.
True only if the car's engine is stopped.
Always true.
The same distance as the slower arrow.
Twice as far as the slower arrow.
Four times as far as the slower arrow.
More than four times as far as the slower arrow.
1 J
60 J
60 kilojoules
3.6 megajoules
Forces
Momenta
Accelerations
Kinetic energies